hyaline. Abdomen with a short
petiole to the basal segment, which is very short and campanulate; at
its posterior margin are two minute, obscure, pale spots; beneath, the
margins of the apical segments are rufo-piceous.

_Hab._ Aru.

3. ICARIA FASCIATA. _I._ nigra; clypei margine antico, maculis duabus
postscutelli flavis; segmentis abdominis ad apicem flavo anguste
fasciatis.

_Female._ Length 5 lines. Black; the clypeus angular in front, its
anterior margin and a spot on the mandibles yellow; the antennae
rufo-testaceous beneath. Thorax: the anterior margin of the prothorax
slightly rebordered; the anterior coxae with a spot in front and two
spots on the postscutellum yellow; the anterior and intermediate tibiae
beneath, the tarsi beneath and the claw-joint entirely, ferruginous;
wings hyaline with a fuscous stain along the anterior margin of the
superior pair; the metathorax oblique and slightly concave, with an
acute stout tooth on each side. Abdomen: the basal segment campanulate,
the petiole short; a narrow yellow fascia on the apical margin of all
the segments.

_Hab._ Aru.

4. ICARIA BRUNNEA. _I._ rufescenti-fusca; coxis femoribusque obscuris;
alis hyalinis.

_Female._ Length 3-1/2 lines. Reddish-brown; head and thorax punctured,
the abdomen finely rugose; the clypeus and mandibles pale ferruginous,
the former with a darker spot in the middle, the anterior margin
angular. The anterior margin of the prothorax slightly rebordered; the
wings hyaline and iridescent, with a fuscous stain along the anterior
margin of the superior pair; the metathorax abruptly truncate. Abdomen:
the basal margin of the third and following segments black.

_Hab._ Aru.

5. ICARIA GRACILIS. _I._ nigra flavo variegata; abdominis segmento
basali elongato, gracili et petiolato; alis hyalinis.

_Female._ Length 7 lines. Black; the scape in front, the sides and
apical margin of the clypeus, and a spot at the base of the mandibles
yellow; the cheeks reddish-yellow; the antennae ferruginous; the head
covered with short griseous pubescence. Thorax with obscure ferruginous
tints and a short griseous pubescence, most dense on the sides and
beneath; the anterior margin of the prothorax, the tegulae, scutellum and
postscutellum, a broad stripe on each side of the metathorax, the coxae,
and the anterior and intermediate femora, at their apex beneath, yellow;
the scutellum with a ferruginous stain in the middle, the postscutellum
with a b